561629065 has 16 divisors (see below), whose sum is σ = 705783168. Its totient is φ = 428224896.

The previous prime is 561629059. The next prime is 561629161. The reversal of 561629065 is 560926165.

561629065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 561629065 - 2²¹ = 559531913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23917 + ... + 41173.

It is an arithmetic number, because the mean of its divisors is an integer number (44111448).

Almost surely, 2^561629065 is an apocalyptic number.

It is an amenable number.

561629065 is a deficient number, since it is larger than the sum of its proper divisors (144154103).

561629065 is a wasteful number, since it uses less digits than its factorization.

561629065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17568.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 561629065 is about 23698.7144166092. The cubic root of 561629065 is about 825.0555530391.

The spelling of 561629065 in words is "five hundred sixty-one million, six hundred twenty-nine thousand, sixty-five".